From ec81fa16d837f430add92b4d2ee4bd3727ca6c6d Mon Sep 17 00:00:00 2001
From: dzwdz
Date: Wed, 11 Jan 2023 19:35:44 +0100
Subject: kernel: return EPIPE when fs_waiting on a dead filesystem

---
 src/kernel/proc.c | 20 ++++----------------
 1 file changed, 4 insertions(+), 16 deletions(-)
 mode change 100644 => 100755 src/kernel/proc.c

(limited to 'src/kernel/proc.c')

diff --git a/src/kernel/proc.c b/src/kernel/proc.c
old mode 100644
new mode 100755
index 36e6004..408e3d0
--- a/src/kernel/proc.c
+++ b/src/kernel/proc.c
@@ -79,8 +79,8 @@ struct process *process_fork(struct process *parent, int flags) {
 
 	if ((flags & FORK_NEWFS) == 0 && parent->controlled) {
 		child->controlled = parent->controlled;
-		child->controlled->potential_handlers++;
-		child->controlled->refcount++;
+		assert(child->controlled->provhcnt);
+		child->controlled->provhcnt++;
 	}
 
 	child->mount = parent->mount;
@@ -123,24 +123,12 @@ void process_kill(struct process *p, int ret) {
 	if (proc_alive(p)) {
 		if (p->controlled) {
 			// TODO vfs_backend_user_handlerdown
-			assert(p->controlled->potential_handlers > 0);
-			p->controlled->potential_handlers--;
-			if (p->controlled->potential_handlers == 0) {
-				// orphaned
-				struct vfs_request *q = p->controlled->queue;
-				while (q) {
-					struct vfs_request *q2 = q->queue_next;
-					vfsreq_finish_short(q, -1);
-					q = q2;
-				}
-				p->controlled->queue = NULL;
-			}
+			assert(p->controlled->provhcnt > 0);
 			if (p->controlled->user.handler == p) {
 				assert(p->state == PS_WAITS4REQUEST);
 				p->controlled->user.handler = NULL;
 			}
-
-			vfs_backend_refdown(p->controlled);
+			vfs_backend_refdown(p->controlled, false);
 			p->controlled = NULL;
 		}
 
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